Filtering apparatus.



No. 844,438. PATENTED P4113419, 1907. G. L. BAYLEY.

FILTERING APPARATUS,

APPLICATION FILED JULY28, 1906.

2 SHEETS-SHEET 1.

N0. 844,438. PATENTED FEB. 19, 1907. G. L. BAYLBY.

FILTERING APPARATUS.

' APPLIOAIION FILED JULYZB. 1906.

2 SHEETS-SHEET 2' STES GUY L. BAYLEY, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE CUM- MINGS FILTER 00., A CORPORATION OF WEST VIRGINIA.

FILTERING APPARATUS.

Specification of Letters Patent.

Patented Feb. 19, 1907.

To a, whom it Tit/by concern:

Be it known that I, GUY L. BAYLEY, a citizen of the United States ofAmerica, and a resident of Pittsburg, county of Allegheny, State ofPennsylvania, have invented certain new and useful Improvements inFiltering Apparatus, of which the following is a specilication.

My invention relates generally to filtering apparatus, and morespecifically consists of certain improvements in pressure-filters of theclass described in an application filed by me May 4, 1906, and Seriallynumbered 315,169.

As herein embodied the invention is designed to provide, first, forsingle and double filtering of a fluid; second, for washing thefiltering medium without interrupting the delivery of the filteredfluid, and, third, for the delivery of the fluid direct from the supplywhen filtering is not necessary or to permit examination, repair, &c.,of the filtering apparatus.

The object of the invention is to reduce the number of valves ordinarilyemployed and otherwise simplify the su ply and delivery connections, soas to enab e the direction of flow of the fluid to be regulated andcontrolled in a ready and convenient manner.

Apparatus suitable for carrying my invention into effect is illustratedin the accompanying drawings. I wish it understood, however, that I donot limit myself to either the exact construction or arrangement shown,as various changes may be made therein without departing from the spiritand scope of my invention.

In the drawings, Figure 1 is a View in front elevation, partly insection, of a filter constructed in accordance with my invention. Fig. 2is an enlarged detail view of one of the four-way valves employed in theconnections between the tanks. Fig. 3 is a sectional view thereof, takenon the line 8 s of Fig. 2. Fig. 4 is a view in diagram showing theposition of the valves for double filtering, the direction of flow beingfrom left to right, as indicated by arrows. Fig. 5'is a similar viewshowing the valves shifted to reverse the direction of flow. Figs. 6 and7 show the valves in a position to maintain the supply of filtered fluidand utilize that portion delivered in excess of the demand to washeither the. right or left hand tank. Fig. 8 illustrates a modificationin which a by-pass around the filter permits the latter to be cut outand the fluid to flow direct from the supply to the delivery main.

Referring now to the drawings, the filter shown may comprise any numberof tanks or filtering vessels, such'as are indicated at 1 and 2.Preferably two tanks are employed and are provided in the usual mannerwith a suitable bed of filtering material, &c. (Not shown.) Each of thetanks is connected at its upper end with a supply-main (indicated at 3)by a branch pipe 4, and controlling the several branch connections thereis a valve 5 of the four-way type, which is shown in detail in Figs. 2and The lower end of each tank is connected to a delivery-main 6 by abranch pipe 7, and these branch connections are controlled by a four-wayvalve 8, similar to the valve 5 above referred to.

Interposed between the valve-casings there is a connecting-pipe 9, whichis provided about centrally of its length with a waste cpnnection 11,controlled by a valve 12.

The four-way valves 5 and 8 are preferably of the. rotary type, asshown, the valves proper (indicated at 13) being U-shaped and codcrating with circular seats 14, provided in t e casings.

Each valve-casing is tapped at four equispaced points to receive themainand branch connections, and as arranged such connections may becontrolled by the valve either singly or in pairs, as shown in Fig. 3.

In order that the supply of the fluid may be continued when it becomesnecessary to cut out both filtering vessels, a by-pass 15 controlled bya valve 16 may be employed to connect the supply-main 3 direct with thedeli very-main 6, as shown in Fig. 8.

In the use of the apparatus for single filteringthat is to say, when thefluid is to be passed through one filtering vessel onlythe valves may beturned to the position shown in Fig. 1 to connect the tanks in parallelor to the position shown in either Fig. 6 or Fig. 7 to connect themsingly with the mains. In Fig. 1 the apparatus is shown operating atfull capacity, both filtering vessels being in use, as represented bythe arrows, indicating trolling all four of the ports in each connecthedirection of flow of the fluid. In Figs. 6 and 7 the apparatus is shownoperating at about half capacity, as filtering is being carried on inonly one tank.

For double filtering that is, causing the fluid to pass through bothfiltering vessels in seriesthe valves are turned to the position shownin either Figs. 4 or 5. fluid, as indicated by arrows, passes firstthrough the tank at the left and then through that at the right, whilein Fig. 5 the direction of flow is reversed.

When it is desired to w ash the filterbeds of the several tanks withoutinterrupting the supply or delivery of the filtered fluid, the valvesare turned first to the position shown in Fig. 6, in which singlefiltering is being carried on in the left-hand tank, while a reversecurrent of the filtered lluid discharged through the waste connection 15is washing out the filter-bed in the tank at. the right.

Turning the valves to the position shown in Fig. 7 will obviouslyreverse the direction of In Fig. 4 the tion.

3. In a filter system, the combination of a plurality of filteringvessels, a connection 1 from one vessel tothe other at each end low andresult in washing the filter-bed of the left-hand tank with a current offiltered fiuid fronithe tank at the right.

If for any reason it becomes necessary to cut out the entire filteringsystem, the main valves are arranged as in Fig. 8, and the supply ofunfiltered fluid may then be continued 5 through the by-pass connectingthe mains by opening the valve 16.

The extreme simplicity of the supply and delivery connectionsin whichonly two main valves are employed to produce the variety of resultsabove described overcomes many serious objections to apparatus of thisclass now in use and gives rise to a number of important advantageswhich will be apparent from the foregoing description.

Having therefore described my invention, I claim 1. In a filter system,a plurality of filtering vessels, requisite supply, delivery, intercommunicating and waste connections for the several vessels, and two valvescontrolling access to all said connections.

2. In a filter system, the combination of a lurality of filteringvessels, supply and deiverymains, a four-way connection interposedbetween the several vessels and the supply-main, a second four-wayconnection interposed between the several vessels and the delivery-main,and a single valve conthereof, a pipe uniting the connections, and twovalves in said pipe alone controlling all directions of l low of fluidthrough said connections.

4. In a filter system, the combination ofa plurality of filteringvessels, a connection j from one vessel to the other at each endthereof, a pipe uniting the connections and provided with a valvedbranch, and two valves in said )ipe' alone controlling all directions offiow of fluid through said connections. 5. In a filter system, thecombination of a plurality of filtering vessels, a connection from onevessel tothe other at each end thereof, a pipe uniting the connections,and two four-way valves in said pipealone controlling all directions offlow of iluid through said connections.

6. In a filter system, a. plurality of filtering vessels, a connectionfrom one vessel to the other at each end thereof, a pipe uniting theconnections, two valves in the pipe alone controlling all directions offiow of fluid through the connections, and a valved by-. pass bridgingthe valved ortion of said pipe. 7. In a filter system, tfiecoi'nbination of a plurality of filtering vessels, supply and de liverymains, a waste-pipe common to the several vessels, a single valve in thesupplymain, a single valve in the delivery-main, and connectionscontrolled by the valves whereby either vessel may be directly connectedwith. the waste-pipe withoutdisturbing the filtering operation in theother.

8. In a filter system, the combination of a lurality of filteringvessels, supply and deivery mains, a waste-pipe common to the severalvessels, a four-way valve in the supply-main, a four-way valve in thedeliverymain, connections from one valve to one end of each vessel andto the waste-pipe, and connections from the other valveto the other endof each cylinder and to the Waste-pipe.

Signed at New Orleans, Louisiana, this 23d day of July, 1906.

GUY BAYLEY. lVitnesses:

F. L. 'BERNADAS, SAML. WOLF.

